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Solar Activity Report for 5/25/04

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  • David
    The effects of the recent round of high solar wind speed have tapered off, and all is quiet for the time being. There are three sunspot regions visible. One
    Message 1 of 1 , May 25 10:41 PM
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      The effects of the recent round of high solar wind speed have tapered
      off, and all is quiet for the time being. There are three sunspot
      regions visible. One of them, region 618, is a large one and has the
      potential for generating an M-class flare. It is squarely in an
      Earth-pointing position, so if it does fire off anything significant,
      and associated CME would likely be Earth-directed. There is a coronal
      hole rotating into view, although it looks to be too far north on the
      solar disk to send any high speed solar wind towards Earth. We'll
      have a better idea in 48 hours or so when it comes more fully into view.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 101
      SFI : 102
      A index : 6
      K index : 1

      Solar wind speed : 452.9 km/sec
      Solar wind density : 1.1 protons/cc
      Solar wind pressure : 0.3 nPa

      IMF : 4.0
      IMF Orientation : 2.1 nT South

      GOES-12 background X-ray flux level : B1

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be minor. Radio
      blackouts reaching the R1 level are expected.

      Solar Activity forecast :
      Solar activity is expected to be at low to moderate levels. Region 618
      remains capable of producing isolated M-class flare activity.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at quiet to unsettled levels
      throughout the period. NOTE: The ACE spacecraft orbit will bring ACE
      nearly in line with the Sun from about May 30 to June 2, 2004. During
      that time solar radio noise is expected to interfere with spacecraft
      telemetry resulting in the loss of solar wind plasma, magnetic field,
      and particle data.

      Recent significant solar flare activity :
      None
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